| 摘要 |
PROBLEM TO BE SOLVED: To simply structure an input optical system and an observation optical system for a stereoscopic image which have a variable field angle function freely adaptive to variation in input field angle and are free of rotational distortion that a conventional pair mirror optical system has as a problem for a longitudinal array stereoscopy system having stereoscopic screens arrayed one over another. SOLUTION: A stereoscopic screen constitution system uses two oblique-directional optical axis converting paired mirrors which have the same horizontal optical axis refraction angle and also have their difference in vertical optical axis refraction angle as a field angle. Consequently, a distortion-free vertical refraction angle can be obtained without using a prism. COPYRIGHT: (C)2004,JPO
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